Bedienungsanleitung Vaillant ecoVIT exclusiv VKK 476-4 (Seite 15 von 16) (Englisch)

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Appendix

0020258609_00 ecoVIT exclusiv Operating instructions 15

Symptom Possible cause Measure

No hot water, heating stays cold Fault during the ignition pro-

cess. F.28 "No ignition during

start-up" or F.29 "Flame goes

out during operation" appears

in the display. The symbol is

shown in the display.

1. Check whether the gas stopcock is open.

2. If the gas stopcock is closed, open the gas stopcock with the

agreement of an installation company.

3. Press and hold the reset button for one second to cancel

ignition switch-off after three unsuccessful attempts if the

burner has so far failed to ignite.

4. If the product does not start up after three reset attempts,

contact an approved heating specialist company.

Fault in the air/flue gas route

or condensate discharge. F.32

"Speed deviation too great" or

F.50 "Failure Siphon switch"

appears in the display. The

and symbols are shown in the

display.

1. Contact an approved heating specialist company.

Domestic hot water functioning

correctly; heating does not start

Control settings not correct 1. Compare the control settings with the specifications in the

control's operating instructions.

2. Correct the settings in accordance with the operating instruc-

tions for the control.

3. Contact an approved heating specialist company if you en-

counter problems when configuring the settings.

The rotary knob for the heating

flow temperature is not at the

clockwise end stop when the

control is connected

1. Check the setting of the rotary knob for the heating flow tem-

perature when the control is connected.

2. Turn the rotary knob for the heating flow temperature as far

as it will go clockwise.

Heating flow temperature set

incorrectly with no control con-

nected

1. Check the heating flow temperature setting.

2. Set the rotary knob for the heating flow temperature to the

required heating flow temperature with no control connected.

No hot water, heating function-

ing correctly

Control settings not correct 1. Compare the control settings with the specifications in the

control's operating instructions; the rotary knob for the cylin-

der temperature is at the clockwise end stop when the con-

trol is connected.

2. Correct the settings in accordance with the operating instruc-

tions for the control.

3. Contact an approved heating specialist company if you en-

counter problems when configuring the settings.

The rotary knob for the cylinder

temperature is not at the clock-

wise end stop when the control

is connected

1. Check the setting for the rotary knob for the cylinder temper-

ature when the control is connected.

2. Set the rotary knob for the cylinder temperature as far as it

will go clockwise when the control is connected.

The cylinder temperature is

set incorrectly with no control

connected

1. Check the cylinder temperature setting.

2. Set the rotary knob for the cylinder temperature to the re-

quired cylinder temperature with no control connected.

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Vaillant ecoVIT exclusiv VKK 476-4 Seite 15

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